Hepburn’s acting years, she insisted working closely with UNICEF.
A. Though, to
B. Throughout, to
C. Throughout, on
D. Throughout, onto
网友回答
A. Though, to
B. Throughout, to
(答案→)C. Throughout, on
D. Throughout, onto
解析：though 尽管；throughout贯穿；to到；on在……上面；onto在……之上。句意：在赫本的演艺整个年代，他坚持和儿童基金会紧密合作。Insist on doing 坚持做，故选C。